Apparatus for handling slag.



D. T. GROXTON. APPARATUS FOR HANDLING SLAG. APPLIOATION :PILEDl Nov. 18, 1907.

932,765. Patena Aug. 81, 1909.

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D. T. GROXTON. APPARATUS FOR HANDLING SLAG. APPLICATION FILED NOV.18, 1907.

932,765. Patented Aug. 31, 1909.

2 SEETS-SHEET 2.

UNiTED sTATEs PATENT ,oral-*ICEA DAVID T. GBOXTON, F OLEVELAND, OHIO.

ArPARAfrUs r'oft HANDLING sLAG.

specification of Letters Patent. Patented Aug. 31, 1909. Application filed November 18, 1907. Serial No. 402,602.

To all whom 'it may concern:

LCleveland, iii the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement (in Apparatus for Handling Slag, of which the following is a full, clear, and exact description.

The object of the present invention isto provide a'n improved method of-and apparatus for .handling blastfurnace slag in large quantities, with a view not only to properly dispose of the entire furnace run, no matter how large it maybe, but Wit'h a view tofdisposing of it economically andimproving its condition to such a'degree that it will acquire a commercial value of considerable amount.

Heretofore 4ithas -been the practice in most places to/ either' dump`the slag into pile's, where it was wasted, or, in the event that the locationof the plant was such as to prohibit the use of slag dumps, to cast it into pits where it was permitted to cool and .subs'equently broken up by hand labor and shoveled into conveyers for removal either Vto a dump elsewhere or to such a market as it might be fitted for. I am also aware that it has been proposed to dispose of the slag by running the molten material onto re- 'volving t-ables, where -it is raiiulatedf--thel wherein it is molded into bricks, 'which pans'` A, A may be dlsposed -on an endle'ss 'carrier""or" may be supported on stationary trunnions andinverted for the p e of delivering the molded b'rick. I have, however, devised an apparatus and afniethod of handling the slag distinct fro the` above mechansms and practices, which are capable of caring for slag in any amount in which it may, be delivered from the furnaces, and by which it may be delivered in an'improved condition, such as will bring a high price in the' market for suchlpurpo'ses as railroad ballast. Moreover, 'my procedure dispenses with the large quantity of hand labor commonly employed in slag casting pi'ts, and the rapidity of operation is far in exeess of that known in any places where pits are used. i

Figure 1 is a cross section showing the gen- .eral relation of theparts. Fig. 2 is a plan of the casting table showing the breaker partly in section together with the connections of the discharging device. Fig. 3 is an end view -illustrating the structure of the bi'eaker. o

It is my purpose to `deliver the slag either' i in ladles, bogies or run ways in any manner' suitable to the plant, `lto a castingtable A which shall be preferably composed of water cooled iron pla'tes. The table should be of a considerable extentso asto take care of all .of the slag that may be desired, and should be mounted solidly upon a stationary support A'. The back and the ends of the table sliould be provided with upwardly extending sides A2, while the forward or discharge side of the table floor should be inclined upwardly and gradually as at A3, so as to give the forward edge A'i a proximately the same level as the three si es A just mentioned. By this meansa' retaining inclo- .sure lof proper deptli is obtained, that 'depth being sufi'icient to give the slag the thiclrness required for the' uses to which 1t is adapted to be put, as for railway ballast.4

depth has been reached, wherebupon it is i permitted to cool so that it will solidify and be in condition for renioval therefrom. For the purpose of eifecting this removal, I have provided a-follower or scraper bar B which,"during' the operation of casting the,i slag, is located at the rear end of the table -and extends t-ransversely across' the same. This bar is coiinected with any suitable power device, such as a drum B' and cable B2,

thereof, and it is to these partitions that I`` have secured the drawing cables by which the discharge bar is dragg'ed forward. These partition plates may be grooved in the top, as shown in Fig. 3, to' receive the drawing cables and protect them from the o Referring to the accompanying drawlngs slag, if the proportions of the various parts are such as to render this advisable. These partitiion plates are provided for the pur-` pose principallg7 of separating the large mass slag into divisions which may more easly and readily be broken into 'fragments of the proper size -and thickness as the slag sheet is drawn from -the table. Immediately I below the forward edge of the table and in lbeam D' having drop hammers or breakers D2 thereon is mounted in a frame D3 and a cam DJK is located underneath the ends thereof in such manner as tolift the beam below.- As the slag sheet is continuallyv and permit it to drop at properly timed intervals during the withdrawal of the' slag Sheet. The descent of the breaking beam upon the sheet of slag, as it projects over the end of the table, will, obviously, result in the crushing off or breaking of that por tion vof the sheet overhanging the edge,- theresulting fragments falling into the car drawn forward sliding up from the inclined portion of the floor of the casting table, the breaker Will intermittently descend upon the inclmed overhanging portion of the same and reduce 'the entire slag sheet to the desired 'condition for shipment. VVhen the entire mass of slag has thus been brought to the proper Iform for. delivery to the market, the discharge bar is dragged back to the rear side of vthe table by any means, such, for example, as a ca-ble Bf* properly reaLved around pulleys to the same `winding drum whlch 1s used to drag it forward. The detaled connection of the Operating parts,` `however, 1s not'of anyv consequence so long principles of the invention as the general are preserved. i It will be seen that with the disposition of apparatus which I have devised any Quantity of slag may be taken care of and may be handled Without the aid of a crew of I slag in. that condition in which it has the` greatest market value,-a matter which is of decided importance in view of the present methods and 'prices paid for the ordinary granulated or powdered slag.

Having thus described my invention, I claim': v

. l. In combination, a stationary table for casting and cooling slag in large sheets, means for sliding the Sheet slag from the stationary table, and means for breaking the slag into small fragments as it is delivered from said table.

2. In combination a'stationary table for casting and Cooling molten slag, the fioor being shaped to permit the solidified slag sheetbeing'sl-id of one side thereof, retainig walls to hold the molten slag on the table in a layer of desired thickness, and mechanical means for positively sliding the solidified slag over the `delivery edge of the table.

3.1In combination a stationary table for casting and Cooling molten slag, the floor 'being shaped to permit the solidified slag DAVID T. oRoX'roN.

' Witnesses:

H. R. SULLIVAN, E. B. GILoHnIs'r. 

